[CaptainGizmo]

I would suggest that you add fittings in the appropriate sizes like this https://www.mcmaster.com/push-to-connect...ial~brass/. I don’t like push to connect, but these jewels will splice a cut or nicked line in about two seconds and get you back in business until you can fix it correctly.

If you also add https://www.mcmaster.com/51915K36 in the same sizes, you can cap an air line in short fashion.

Yes true, Richard!  I have a couple plastic ones, just for the emergency you mentioned.  The list I made was strictly to help folks build a DOT supply, but they certainly can use a few of the plastic (or brass) push-on unions!